Using the Atom Publishing Protocol, also known as AtomPub, you can create or update posts in a blog.
Creating blog postsParent topic: Using the publishing APIs
To create a blog post, send an Atom entry document containing the new blog post entry to the user's weblog Entries resource.
Retrieving blog posts
To retrieve a post from a blog, use the edit link found in the blog post entry in the blog's weblog Entries feed.
Updating blog posts
To update a blog post, send a replacement blog post entry document in Atom format to the existing blog post's edit web address.
Deleting blog posts
To delete a post from a blog, use the HTTP DELETE method.